installation of mysql gem failed - ruby-on-rails

Question

everything is set so far and the only issue with mysql2 I saw many solutions but none of them are working for me. it asks me to check some mkmf.log which I don't understand.
I even tried solutions from similar questions but nothing worked
rails version 6.1.4 and ruby 3.0.2 on windows 10 pro
below are the two files it tells me to refer to for resolving the issue
mkmf.log
have_func: checking for rb_absint_size()... -------------------- yes
"gcc -o conftest.exe -IC:/Ruby30-x64/include/ruby-3.0.0/x64-mingw32 -IC:/Ruby30-x64/include/ruby-3.0.0/ruby/backward -IC:/Ruby30-x64/include/ruby-3.0.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math -fstack-protector-strong conftest.c -L. -LC:/Ruby30-x64/lib -L. -pipe -s -fstack-protector-strong -m64 -lx64-msvcrt-ruby300 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7: return !!argv[argc];
8: }
/* end */
"gcc -o conftest.exe -IC:/Ruby30-x64/include/ruby-3.0.0/x64-mingw32 -IC:/Ruby30-x64/include/ruby-3.0.0/ruby/backward -IC:/Ruby30-x64/include/ruby-3.0.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math -fstack-protector-strong conftest.c -L. -LC:/Ruby30-x64/lib -L. -pipe -s -fstack-protector-strong -m64 -lx64-msvcrt-ruby300 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5:
6: /*top*/
7: extern int t(void);
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: int (* volatile tp)(void)=(int (*)(void))&t;
12: printf("%d", (*tp)());
13: }
14:
15: return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_absint_size; return !p; }
/* end */
--------------------
have_func: checking for rb_absint_singlebit_p()... -------------------- yes
"gcc -o conftest.exe -IC:/Ruby30-x64/include/ruby-3.0.0/x64-mingw32 -IC:/Ruby30-x64/include/ruby-3.0.0/ruby/backward -IC:/Ruby30-x64/include/ruby-3.0.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math -fstack-protector-strong conftest.c -L. -LC:/Ruby30-x64/lib -L. -pipe -s -fstack-protector-strong -m64 -lx64-msvcrt-ruby300 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5:
6: /*top*/
7: extern int t(void);
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: int (* volatile tp)(void)=(int (*)(void))&t;
12: printf("%d", (*tp)());
13: }
14:
15: return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_absint_singlebit_p; return !p; }
/* end */
--------------------
have_func: checking for rb_wait_for_single_fd()... -------------------- yes
"gcc -o conftest.exe -IC:/Ruby30-x64/include/ruby-3.0.0/x64-mingw32 -IC:/Ruby30-x64/include/ruby-3.0.0/ruby/backward -IC:/Ruby30-x64/include/ruby-3.0.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math -fstack-protector-strong conftest.c -L. -LC:/Ruby30-x64/lib -L. -pipe -s -fstack-protector-strong -m64 -lx64-msvcrt-ruby300 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
conftest.c: In function 't':
conftest.c:17:57: error: 'rb_wait_for_single_fd' undeclared (first use in this function)
17 | int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_wait_for_single_fd; return !p; }
| ^~~~~~~~~~~~~~~~~~~~~
conftest.c:17:57: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5:
6: /*top*/
7: extern int t(void);
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: int (* volatile tp)(void)=(int (*)(void))&t;
12: printf("%d", (*tp)());
13: }
14:
15: return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_wait_for_single_fd; return !p; }
/* end */
"gcc -o conftest.exe -IC:/Ruby30-x64/include/ruby-3.0.0/x64-mingw32 -IC:/Ruby30-x64/include/ruby-3.0.0/ruby/backward -IC:/Ruby30-x64/include/ruby-3.0.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math -fstack-protector-strong conftest.c -L. -LC:/Ruby30-x64/lib -L. -pipe -s -fstack-protector-strong -m64 -lx64-msvcrt-ruby300 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5:
6: /*top*/
7: extern int t(void);
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: int (* volatile tp)(void)=(int (*)(void))&t;
12: printf("%d", (*tp)());
13: }
14:
15: return !!argv[argc];
16: }
17: extern void rb_wait_for_single_fd();
18: int t(void) { rb_wait_for_single_fd(); return 0; }
/* end */
--------------------
gem_make
current directory: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mysql2-0.5.3/ext/mysql2
C:/Ruby30-x64/bin/ruby.exe -I C:/Ruby30-x64/lib/ruby/3.0.0 -r ./siteconf20210724-5736-2jo1ju.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for rb_wait_for_single_fd()... yes
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby30-x64/bin/$(RUBY_BASE_NAME)
--with-mysql-dir
--without-mysql-dir
--with-mysql-include
--without-mysql-include=${mysql-dir}/include
--with-mysql-lib
--without-mysql-lib=${mysql-dir}/lib
--with-mysql-config
--without-mysql-config
--with-mysqlclient-dir
--without-mysqlclient-dir
--with-mysqlclient-include
--without-mysqlclient-include=${mysqlclient-dir}/include
--with-mysqlclient-lib
--without-mysqlclient-lib=${mysqlclient-dir}/lib
--with-mysqlclientlib
--without-mysqlclientlib
C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `block in find_library': undefined method `split' for nil:NilClass (NoMethodError)
from C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `collect'
from C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `find_library'
from extconf.rb:87:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
C:/Ruby30-x64/lib/ruby/gems/3.0.0/extensions/x64-mingw32/3.0.0/mysql2-0.5.3/mkmf.log
extconf failed, exit code 1